Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 100
EXTRA PLATE Draw one of the figures shown on page 89. Allthe fines radiating from the centers C may be ob-tained by using the triangles on the T square, eithersingly or in combination. Work carefully andaccurately. Do not put the dimensions on thedrawing. INKING Ink only the heavy lines of the… … Plate 7. Extra Plate CHAPTER X CYLINDRICAL WORKPLATES 9 AND 10 Whenever a circular piece or circular hole is shownin a mechanical drawing, a line is used to indicate thelocation of the center of the piece or hole. This lineis known as a center line, and is included in the groupof secondary lines…
Mechanical drawing
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